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A radioactive isotope has a half-life of 8.00 min and an initial decay rate of 8000 Bq. Calculate the decay constant. Enter your answer in units 1/s.
The tires of a 1545 kilogram car are 0.590 meter in diameter and the coefficients of friction with the road surface are µs = 0.800 and µk = 0.600. find the maximum torque that can be exerted by the engine on a driving wheel
Three identical 1.20 μC point charges are located at the corners of an equilateral triangle whose sides are 0.450 meter long. Evaluate the potential energy of the system
A 20.0-? F capacitor is charged by a 150.0-V power supply, then disconnected from the power supply and connected in series with a 0.280-mH inductor. Compute (a) the oscillation frequency of the circuit;
The hour hand on a certain clock is 9.0 centimeter long. Determine the tangential speed of the tip of this hand
At what speed does a clock move by respect to an observer that measures it to run at one-third the rate of an identical clock at rest by respect to the observer?
An abstract sculpture is constructed by suspending a sphere of polished rock along the vertical with four cables connected to a square wooden frame 1.1 m on a side. If the stone has mass m = 7.5 kg, and the bottom two cables are under a tension of..
The initial speed of a 1.96-kg box traveling up a plane inclined 37° to the horizontal is 3.31 m/s. How far along the incline does the box travel before coming to a stop
The angle of refraction of a ray of light traveling through an ice cube is 38 degree. Find the angle of incidence
What is the mass of hydrogen and the mass of oxygen in one liter of water? How many atoms of hydrogen and atoms of oxygen does it contain? What is the mass of one H2O molecule in kilograms?
metal sphere of radius 32 cm has a net charge of 3.0 multiply.gif 10-8 C. What is the electric field at the sphere's surface
A speaker generating a tone at 348 Hertz is stationary. A person is moving toward the speaker with a speed of 32 meter per second. Find the frequency of the tone perceived by the person
upon what properties of the sound wave do the a loudness b pitch and c quality of a musical note depend? why do the
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